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Script should still work after loadsvg is used
[ipdf/code.git]
/
src
/
rational.h
diff --git
a/src/rational.h
b/src/rational.h
index
ce1a767
..
9c97744
100644
(file)
--- a/
src/rational.h
+++ b/
src/rational.h
@@
-8,17
+8,35
@@
#include "common.h"
#include <cmath>
#include <cassert>
#include "common.h"
#include <cmath>
#include <cassert>
+#include "arbint.h"
+#include "gmpint.h"
+#include <climits>
+#include <values.h>
namespace IPDF
{
namespace IPDF
{
+
+template <class T> T Tabs(const T & a)
+{
+ return abs(a);
+}
+template <> Arbint Tabs(const Arbint & a);
+template <> Gmpint Tabs(const Gmpint & a);
+
/* Recursive version of GCD
template <class T>
T gcd(const T & a, const T & b)
{
/* Recursive version of GCD
template <class T>
T gcd(const T & a, const T & b)
{
- if (a == 1 || a == 0) return 1;
- if (b == 0) return a;
- if (b == a) return a;
+ Debug("Called on %li/%li", int64_t(a), int64_t(b));
+ if (a == T(1) || a == T(0)) return T(1);
+ if (b == T(0)) return a;
+ if (b == a)
+ {
+ Debug("Equal!");
+ return a;
+ }
+ Debug("Not equal!");
if (a > b) return gcd(a-b,b);
return gcd(a, b-a);
if (a > b) return gcd(a-b,b);
return gcd(a, b-a);
@@
-29,6
+47,8
@@
T gcd(const T & a, const T & b)
template <class T>
T gcd(const T & p, const T & q)
{
template <class T>
T gcd(const T & p, const T & q)
{
+
+
T g(1);
T big(p);
T small(q);
T g(1);
T big(p);
T small(q);
@@
-41,11
+61,14
@@
T gcd(const T & p, const T & q)
return g;
while ((g = big % small) > T(0))
{
return g;
while ((g = big % small) > T(0))
{
+ //Debug("big = %li, small = %li", int64_t(big), int64_t(small));
big = small;
small = g;
big = small;
small = g;
+ //Debug("Loop %u", ++count);
}
return small;
}
return small;
-}
+}
+
template <class T = int64_t>
struct Rational
template <class T = int64_t>
struct Rational
@@
-54,8
+77,9
@@
struct Rational
Rational(double d=0) : P(d*1e6), Q(1e6) // Possibly the worst thing ever...
{
Simplify();
Rational(double d=0) : P(d*1e6), Q(1e6) // Possibly the worst thing ever...
{
Simplify();
- CheckAccuracy(d, "Construct from double");
}
}
+
+
Rational(const T & _P, const T & _Q) : P(_P), Q(_Q)
{
Rational(const T & _P, const T & _Q) : P(_P), Q(_Q)
{
@@
-79,7
+103,13
@@
struct Rational
Q = T(1);
return;
}
Q = T(1);
return;
}
- T g = gcd(T(llabs(P)),T(llabs(Q)));
+ if (P == Q)
+ {
+ P = Q = T(1);
+ return;
+ }
+ T g = gcd(Tabs(P), Tabs(Q));
+ //Debug("Got gcd!");
P /= g;
Q /= g;
}
P /= g;
Q /= g;
}
@@
-100,31
+130,34
@@
struct Rational
Rational operator+(const Rational & r) const
{
Rational result = (r.P == T(0)) ? Rational(P,Q) : Rational(P*r.Q + r.P*Q, Q*r.Q);
Rational operator+(const Rational & r) const
{
Rational result = (r.P == T(0)) ? Rational(P,Q) : Rational(P*r.Q + r.P*Q, Q*r.Q);
- result.CheckAccuracy(ToDouble() + r.ToDouble(),"+");
+ //if (!result.CheckAccuracy(ToDouble() * r.ToDouble(),"+"))
+ //{
+ // Debug("This is %s (%f) and r is %s (%f)", Str().c_str(), ToDouble(), r.Str().c_str(), r.ToDouble());
+ //}
return result;
}
Rational operator-(const Rational & r) const
{
Rational result = (r.P == T(0)) ? Rational(P,Q) : Rational(P*r.Q - r.P*Q, Q*r.Q);
return result;
}
Rational operator-(const Rational & r) const
{
Rational result = (r.P == T(0)) ? Rational(P,Q) : Rational(P*r.Q - r.P*Q, Q*r.Q);
- result.CheckAccuracy(ToDouble() - r.ToDouble(),"-");
+
//
result.CheckAccuracy(ToDouble() - r.ToDouble(),"-");
return result;
}
Rational operator*(const Rational & r) const
{
Rational result(P * r.P, Q * r.Q);
return result;
}
Rational operator*(const Rational & r) const
{
Rational result(P * r.P, Q * r.Q);
- if (!result.CheckAccuracy(ToDouble() * r.ToDouble(),"*"))
- {
-
Debug("This is %s (%f) and r is %s (%f)", Str().c_str(), ToDouble(), r.Str().c_str(), r.ToDouble());
- }
+
//
if (!result.CheckAccuracy(ToDouble() * r.ToDouble(),"*"))
+
//
{
+
//
Debug("This is %s (%f) and r is %s (%f)", Str().c_str(), ToDouble(), r.Str().c_str(), r.ToDouble());
+
//
}
return result;
}
Rational operator/(const Rational & r) const
{
Rational result(P * r.Q, Q*r.P);
return result;
}
Rational operator/(const Rational & r) const
{
Rational result(P * r.Q, Q*r.P);
- if (!result.CheckAccuracy(ToDouble() / r.ToDouble(),"/"))
- {
-
Debug("This is %s (%f) and r is %s (%f)", Str().c_str(), ToDouble(), r.Str().c_str(), r.ToDouble());
- }
+
//
if (!result.CheckAccuracy(ToDouble() / r.ToDouble(),"/"))
+
//
{
+
//
Debug("This is %s (%f) and r is %s (%f)", Str().c_str(), ToDouble(), r.Str().c_str(), r.ToDouble());
+
//
}
return result;
}
return result;
}
@@
-134,19
+167,40
@@
struct Rational
//Rational operator*(const Rational & r) const {return Rational(ToDouble()*r.ToDouble());}
//Rational operator/(const Rational & r) const {return Rational(ToDouble()/r.ToDouble());}
//Rational operator*(const Rational & r) const {return Rational(ToDouble()*r.ToDouble());}
//Rational operator/(const Rational & r) const {return Rational(ToDouble()/r.ToDouble());}
- Rational & operator=(const Rational & r) {P = r.P; Q = r.Q; return *this;}
+ Rational operator-() const {Rational r(*this); r.P = -r.P; return r;}
+ Rational & operator=(const Rational & r) {P = r.P; Q = r.Q; Simplify(); return *this;}
Rational & operator+=(const Rational & r) {this->operator=(*this+r); return *this;}
Rational & operator-=(const Rational & r) {this->operator=(*this-r); return *this;}
Rational & operator*=(const Rational & r) {this->operator=(*this*r); return *this;}
Rational & operator/=(const Rational & r) {this->operator=(*this/r); return *this;}
Rational & operator+=(const Rational & r) {this->operator=(*this+r); return *this;}
Rational & operator-=(const Rational & r) {this->operator=(*this-r); return *this;}
Rational & operator*=(const Rational & r) {this->operator=(*this*r); return *this;}
Rational & operator/=(const Rational & r) {this->operator=(*this/r); return *this;}
+ Rational Sqrt() const
+ {
+ return Rational(sqrt(ToDouble()));
+ }
+
+ int64_t ToInt64() const
+ {
+ return (int64_t)ToDouble();
+ }
- double ToDouble() const {return (double)(P) / (double)(Q);}
+ double ToDouble() const
+ {
+ T num = P, denom = Q;
+ while (Tabs(num) > T(1e10) || Tabs(denom) > T(1e10))
+ {
+ num /= T(16);
+ denom /= T(16);
+ }
+ return ((double)(num))/((double)(denom));
+ }
bool CheckAccuracy(double d, const char * msg, double threshold = 1e-3) const
{
bool CheckAccuracy(double d, const char * msg, double threshold = 1e-3) const
{
- double result = fabs(ToDouble() - d) / d;
+ double result = fabs(ToDouble() - d);
+ if (d != 0e0) result /= d;
if (result > threshold)
{
Warn("(%s) : Rational %s (%f) is not close enough at representing %f (%f vs %f)", msg, Str().c_str(), ToDouble(), d, result, threshold);
if (result > threshold)
{
Warn("(%s) : Rational %s (%f) is not close enough at representing %f (%f vs %f)", msg, Str().c_str(), ToDouble(), d, result, threshold);
+ Backtrace();
return false;
}
return true;
return false;
}
return true;
@@
-154,7
+208,7
@@
struct Rational
std::string Str() const
{
std::stringstream s;
std::string Str() const
{
std::stringstream s;
- s <<
(int64_t)P << "/" << (int64_t)Q
;
+ s <<
int64_t(P) << "/" << int64_t(Q)
;
return s.str();
}
return s.str();
}
@@
-162,16
+216,13
@@
struct Rational
T Q;
};
T Q;
};
-inline Rational<int64_t> pow(const Rational<int64_t> & a, const Rational<int64_t> & b)
+
+template <class P>
+Rational<P> Abs(const Rational<P> & a)
{
{
- //TODO:Implement properly
- int64_t P = std::pow((double)a.P, b.ToDouble());
- int64_t Q = std::pow((double)a.Q, b.ToDouble());
- return Rational<int64_t>(P, Q);
+ return Rational<P>(Tabs(a.P), a.Q);
}
}
-
-
}
#endif //_RATIONAL_H
}
#endif //_RATIONAL_H
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